Answer:
A. Substitution
Step-by-step explanation:
You have already gotten what y is in x terms, so you could plug that into the first equation and find out what y and x are
Answer:
2
- 5x² - 63
Step-by-step explanation:
Given
(2x² + 9)(x² - 7)
Each term in the second factor is multiplied by each term in the first factor, that is
2x² (x² - 7) + 9(x² - 7) ← distribute both parenthesis
= 2 - 14x² + 9x² - 63 ← collect like terms
= 2 - 5x² - 63
This can be solved by using the 30 60 90 triangle. The 30-60 side is equal to 2x, here it is 2x=18. The 60-90 side is equal to x. So this side is 18/2=9. The 30-90 side is by the way equal to the root of x, so here the root of 18
Answer:
36 tickets
Step-by-step explanation:
each ticket costs $1
Hope this helped!
Answer:
(A) 126
Step-by-step explanation:
x/9 =14
Multiply each side by 9
x/9*9 =14*9
x =126
